feat: add support for Fabric targeting Minecraft 1.20.1 (#217)

* Upgrade the Fabric version and rewrite the code.

* Migrate the completed code of version 1.19.2.

* fabric: some events.

* Updated open source license to Apache 2.0.

* Add Plan analyzer support.

* Fix build.

* `UnsupportedOperationException`

* More fabric implementation work, update to v3's structure

* Suppress compiler warnings

* Add commands, adjust registration order

* Inventory and ender chest data/serializers

* Update license headers

* Fixup shaded library relocations

* Fix build

* Potion effects & location serializers

* Catch `Files.createDirectory(path);` in `#getDataFolder`

* Update fabric.mod.json metadata, correct icon

* Events for Fabric (#218)

* Added apache commons pool2 dependency

A NoClassDefFoundError would get thrown without this dependency. Relocation appears to not work very well either, so it has been excluded for now

* Added in Item Pickup and Drop events and mixins

* Update husksync.mixins.json

* Switch drop item event to using Network Handler mixin

* Implemented even more events

- Interact block (place too)
- Interact Entity
- Use Item
- Block Break
- Player damage
- Inventory Click (handles drops)
- Player Commands

* Re-implement the dropItem mixin

* Set dropItem mixin as cancellable

* deps: Include all bukkit runtime deps

* fix/fabric: Supply AudienceProvider to `ConsoleUser` constructor

* docs: credit Fabric porters :)

* fix: Item deserialization now working

* refactor: Remove inventory debug log

* docs: Update `fabric.mod.json`

* refactor: update with upstream changes

* fix: dangling JD comment

* fix: config file reference fixes

* refactor: optimize imports, fix relocation

* refactor: move tag references to common

* refactor: use lombok for data / serializer methods

* fix: bad annotating

* refactor: adjust callback formatting

* fabric: bump deps, refactor to match main branch

* fabric: more serializer type work

* feat: register more fabric data serializers

also fixes a compile issue on bukkit, and refactors the JSON serializer to be in the common module

* feat: implement remaining Fabric serializers

* feat: add on-the-fly DFU for Fabric

Now auto-upgrades item data to support version bumps. Also improved the schema a lil' bit.

* feat: add missing mixins

* feat: implement toKeep/toDrop option on Fabric

* feat: apply stats on sync

* build: append fabric MC version to file name

* feat: add HuskSync API support for Fabric

Also updates the docs

* refactor: fixup a deprecation in the wrong spot

* refactor: optimize fabric item serializing in-line with Bukkit

* feat: implement viewer GUIs on Fabric

* docs: Fabric is in Alpha for now

---------

Co-authored-by: hanbings <hanbings@hanbings.io>
Co-authored-by: Stampede <carterblowers01@gmail.com>

README.md

@@ -44,15 +44,15 @@
 **Ready?** [It's syncing time!](https://william278.net/docs/husksync/setup)
 
 ## Setup
-Requires a MySQL/Mongo/PostgreSQL database, a Redis (v5.0+) server and any number of Spigot-based 1.17.1+ Minecraft servers, running Java 17+.
+Requires a MySQL/Mongo/PostgreSQL database, a Redis (v5.0+) server and a network of Spigot (1.17.1+) or Fabric (1.20.1) Minecraft servers, running Java 17+.
 
-1. Place the plugin jar file in the /plugins/ directory of each Spigot server. You do not need to install HuskSync as a proxy plugin.
+1. Place the plugin jar file in the `/plugins` or `/mods` directory of each Spigot/Fabric server. You do not need to install HuskSync as a proxy plugin.
 2. Start, then stop every server to let HuskSync generate the config file.
-3. Navigate to the HuskSync config file on each server (~/plugins/HuskSync/config.yml) and fill in both your database and Redis server credentials.
+3. Navigate to the HuskSync config file on each server and fill in both your database and Redis server credentials.
 4. Start every server again and synchronization will begin.
 
 ## Development
-To build HuskSync, simply run the following in the root of the repository:
+To build HuskSync, simply run the following in the root of the repository (building requires Java 17). Builds will be output in `/target`:
 
 ```bash
 ./gradlew clean build
@@ -66,7 +66,7 @@ HuskSync is licensed under the Apache 2.0 license.
 Contributions to the project are welcome—feel free to open a pull request with new features, improvements and/or fixes!
 
 ### Support
-Due to its complexity, official binaries and customer support for HuskSync is provided through a paid model. This means that support is only available to users who have purchased a license to the plugin from Spigot, Polymart, Craftaro, or BuiltByBit and have provided proof of purchase. Please join our Discord server if you have done so and need help!
+Due to its complexity, official binaries and customer support for HuskSync is provided through a paid model. This means that support is only available to users who have purchased a license to the plugin from Spigot, Polymart, or BuiltByBit and have provided proof of purchase. Please join our Discord server if you have done so and need help!
 
 ### Translations
 Translations of the plugin locales are welcome to help make the plugin more accessible. Please submit a pull request with your translations as a `.yml` file.